Storm Prediction Center
Day 1 and Day 2 Fire Weather Outlooks

ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 220806
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0206 AM CST SAT DEC 22 2007
VALID 221200Z - 231200Z
...CRITICAL FIRE WEATHER AREA FOR MUCH OF SRN TX...
...SYNOPSIS...
AN UPPER TROUGH WILL MOVE EWD ACROSS THE SRN PLAINS WITH SURFACE LOW
DEVELOPING INTO SRN MO BY AFTERNOON. BEHIND THIS LOW...A STRONG AREA
OF HIGH PRESSURE WILL BRING DRIER AIR AND STRONG NLY WINDS OVER THE
SRN PLAINS. THE WARMEST AND DRIEST CONDITIONS ALONG WITH THE WINDS
WILL BE OVER SRN TX...RESULTING IN A CRITICAL FIRE SITUATION. TO THE
W...ANOTHER AREA OF HIGH PRESSURE WILL BE SITUATED OVER THE GREAT
BASIN THIS MORNING...SHIFTING INTO THE CNTRL ROCKIES LATER TODAY.
OFFSHORE FLOW WILL BE ONGOING ACROSS SRN CA THIS MORNING WITH
LOCALLY STRONG WINDS BUT RELATIVELY COOL TEMPERATURES.
...CRITICAL FIRE WEATHER AREA - MUCH OF SRN TX...
PRIMARY CONDITIONS: VERY LOW RH AND STRONG WINDS
WINDS WILL INCREASE BY EARLY AFTERNOON TO 20-30 MPH WITH HIGHER
GUSTS AS HIGH PRESSURE MOVES IN AND LOW DEEPENS TO THE NE. STRONG
HEATING...DOWNSLOPE FLOW AND MIXING WILL RESULT IN VERY LOW RH
VALUES...AVERAGING 15-20 PERCENT. GIVEN DROUGHT IN RECENT
MONTHS...THIS SHOULD RESULT IN A CRITICAL FIRE SITUATION MAINLY
DURING THE AFTERNOON HOURS. GUSTY WINDS MAY PERSIST INTO THE
EVENING...BUT TEMPERATURES WILL COOL RAPIDLY.
...SRN CA...
LOCALLY GUSTY WINDS WILL BE ONGOING THIS MORNING IN FAVORED
LOCATIONS WITH HIGH PRESSURE CENTERED OVER NV. UPPER RIDGING WILL
TAKE PLACE THROUGH THE DAY...AND WILL HELP WEAKEN SURFACE GRADIENT.
IN GENERAL...TEMPERATURES WILL BE COOL AND RH MARGINAL WITH RECENT
PRECIPITATION HELPING TO MITIGATE THE FIRE THREAT.
..JEWELL.. 12/22/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...

ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 220807
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0207 AM CST SAT DEC 22 2007
VALID 231200Z - 241200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
A SECONDARY UPPER SHORTWAVE TROUGH WILL MOVE SEWD ACROSS THE CNTRL
ROCKIES AS A POWERFUL LOW MATURES ACROSS THE GREAT LAKES. A DRY AIR
MASS WITH HIGH PRESSURE WILL REMAIN ACROSS THE SRN PLAINS IN THE
WAKE OF PREVIOUS DAYS COLD FRONT...RESULTING IN MODERATELY WINDY AND
DRY CONDITIONS FOR SERN NM AND MUCH OF TX. TO THE W...ANOTHER AREA
OF HIGH PRESSURE WILL MOVE INTO THE GREAT BASIN BEHIND SECONDARY
TROUGH...WITH DRIER AND LOCALLY WINDY CONDITIONS FOR PORTIONS OF SRN
CA.
...SERN NM INTO WRN AND CNTRL TX...
A VERY DRY AIR MASS WILL REMAIN WITH HIGH PRESSURE IN PLACE. WLY
FLOW ALOFT AND DAYTIME HEATING WILL HELP INDUCE A LEE LOW ACROSS ERN
NM/W TX...HELPING TO INCREASE THE PRESSURE GRADIENT AND WINDS.
SUSTAINED SWLY WINDS OF 15-20 MPH ARE LIKELY. TEMPERATURES WILL BE
RELATIVELY COOL...MAINLY IN THE 50S. HOWEVER...RH WILL STILL MANAGE
TO DROP INTO THE 15-20 PERCENT RANGE AT PEAK HEATING...RESULTING IN
A MODERATE FIRE THREAT.
...SRN CA NEAR COASTAL RANGE...
LOCALLY STRONG OFFSHORE WINDS ARE LIKELY TO DEVELOP MAINLY THROUGH
PASSES/CANYONS SUNDAY AFTERNOON WITH A MODERATE PRESSURE GRADIENT.
NLY WINDS ALOFT WILL EXIST ON BACK SIDE OF FOUR CORNERS TROUGH WHICH
WILL HELP SUPPORT STRONG WIND GUSTS. OVERALL RH LEVELS ARE EXPECTED
TO BE MARGINAL BUT A FEW LOCALES SHOULD DROP INTO THE
TEENS...ESPECIALLY IN DOWNSLOPE AREAS.
..JEWELL.. 12/22/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...